Sanding and chamfering machine



March 1930- f J. w. RoscHE SANDING AND GHA MFERING MACHINE Filed Aug. 7, 1926 7 Sheets-Sheet l March 11, 1930. J. w. ROSCHE 1,750,433

SANDING AND- CHAMFERING- MACHINE Filed Aug. 7. 1926 7 Sheets-Sheet 2 I VVEN TOR.

Warn 16C A A TTORNEYS March 11, 1930. I w, sc 1,750,433

SANDING AND CHAMFERING MACHINE Filed Aug. 7, 1926 7 Sheets-Sheet 5 Iii 915 1N VEN TOR.

.4 TTORNEYS March 11, 1930. J w osc 1,750,433

' SANDING AND CHAMFERING MACHINE Filed Aug. 7, 1926 7 Sheets-Sheet 4 I NV EN TOR,

A TTORNEYS.

March 11, 1930.

J. W. ROSCHE SANDING AND GHAMF'ERING MACHINE Filed Aug. 7, 1926 7 Sheets-Sheet 5 A, A Al 1.;I '15.\ TOR.

.-i TTORNEY5 March 11, 1930. J. w. ROSCHE SANDING AND CHAMFERING MACHINE Filed Aug. 7, 1926 7 Sheets-Sheet 6 ATTORNEYS March 11, 1930. J, w, oscH 1,750,433

SANDING AND CHAMFERING MACHINE Filed Aug. 7, 1926 7 Sheets-Sheet 7 TIME ll Hi IN VEN TOR.

A TTORNEW Patented Mar. 11, 1930 UNITED STATES "PATENT orrics SANDING AND CHAMFERING MACHINE Application filed. August 7, 1926. Serial No. 127,883.

This invention relates to improvements in sanding and chamfering machines.

It is one of the objects of the present invention to provide a'sanding and chamfering 6 machine having means for smoothing or finishing the exterior surfaces of tubs and other like receptacles and for chamfering the open edge portion of the receptacle.

A further object of the invention is to provide a sanding and chamferin vmachine which is adapted to receive assem led staves and maintain them in position to permit the removal of the holding bands so the staves can be chamfered and sanded and the bands be again replaced before the staves are removed.

A further object of the invention is to provide a sanding and chamfering machine having several stations of diflerent opera- 2 tions in which the parts holding the staves are intermittently moved from one station to another during the cycle of operation.

A further object of the invention is to provide a sanding and chamfering machine having a revoluble work receiving head formed with a plurality of independently revoluble stave holding members which are moved to work stations intermittently and in successive order.

A further object of the invention is to provide a sanding and chamfering machine having means for forcing olf the temporary holding bands preparatory-to the chamfering and sanding operation and then to force the permanent hoop or band in position on said staves.

' A further object of the invention is to provide a sanding and chamfering machine having means for efliciently holding the sanding All mechanism up to its work.

A further object of the invention is to provide a sanding and chamfering machine having a fluid pressure means for controlling and holding the staves in assembled position on the machine.

A further object of the invention is to provide a sanding and chamfering -machine which is of simple construction, is strong and durable and eflicient in use, and is well adapted for the purpose described.

.ing and chamfering machine;

line 44 of Fig. 3;

With the above and other objects in view, the invention consists of the improved sanding and chamfering machine and its parts and combinations as set forth in the claims, and all equivalents thereof.

In the accompanying drawings in which the same reference characters indicate the same parts in all of the views:

Fig. 1 is a front view of the improved sand- Fig. 2 is a rear view thereof;

Fig. 3 is a side view on a larger scale of the lower portion of the machine;

Fig. 4 is a vertical sectional View taken on Fig. 5 is a detail view of the valve controlling the flow of the pressure fluid to the stave holding mechanism;

Fig. 6 is an enlarged sectional detail view of one of the stave holding mechanisms and connected parts;

Fig. 7 is a front view of one of the stave holding mechanisms;

. Fig. 8 is a side view of the lever and adjacent parts for controlling the flow of the pressure fluid;

Fig. 9 is a sectional detail view taken on line 99 of Fig. 8;

Fig. 10 is a sectional detail view of the means for chamfering the edge portions of the staves;

Fig. 11 is a vertical sectional detail view thereof taken on a line between the gear and the supporting frame in Fig. 10;

Fig. 12 is a detail View partly in section of the sanding portion of the machine;

Fig. 13 is a vertical sectional detail view taken on a larger scale on line 1313/ of Fig. 12;

Fig. 14 is a detail view of the clutch mechanism; and

Fig. 15 is a horizontal sectional view of the frame of the machine taken on a larger scale on line 1515 of Fig. 2.

Referring to the drawings, the numeral 18 indicates a base portion upon which frame portions 19 and 20 are mounted. The frame portions 19 support the various elements for holding, dehooping, chamfering and hooping the staves forming the pail or other receptaole, while the frame portion is in the form of a standard for supporting the sanding mechanism.

A tubular shaft 21 journaled in the frame portions 19 is formed with an annular flange 22 for receiving an annular head plate 23 mounted thereon. The head plate 23 carries four forwardly extending and equidistantly spaced stave holding members or heads 24 which are constructed to clamp and hold the staves 24' in assembled position during the various operations. The heads are similar in construction and each comprisesa fluid pressure cylinder 25 projecting forwardly from the head plate 23 and having a piston 26 reciprocably positioned therein which is provided with an outwardly extending iston rod 27. A coiled spring 28 surroun s the piston rod and is interposed between the piston and the head 29 of the cylinder 25, as more clearly shown in Fig. 6. Said spring is arranged to yieldingly hold the piston in its inner position. The outer end of the piston rod carries a cylindrical member 30 which is formed with outer and inner cam portions 31 and 32. Said cams extend in opposite directions. The stave holding head or member 24 is of tubular formation and is journaled on the cylinder 25 and is formed with an annular plate 32 having forwardly projecting peripheral teeth or serrations 33 which are adapted to engage the edges of the staves forming the larger diameter of the receptacle. An annular tapered guide flange 34 of a diameter to extend into the receptacles to be chamfered and sanded, is mounted on the outer face of the said plate to guide and hold the receptacles concentric with relation to the teeth of the annular plate 32. The outer end portion of the member 24 is formed with a number of radially extending arms 35 to which are pivotally connected medially of their length, levers 36 having inwardly extending projections 37 and 38, which engage the cam portions 31 and 32 of the member 24. Clamping levers 39 are pivotally connected to the outer ends of the levers 36 and have shouldered portions 39 which are adapted to engage the edges of the staves forming the smaller end of the receptacle,'-as shown in Fig. 6. Said shouldered end portions are of circular form to conform to the contour of the tubs they engage. The inner ends of the levers 36 are provided with adjusting screws 40 to limit the inward movement of said lever ends, and the inner ends of the clamping levers 39 are provided with adjusting screws 41 which are engaged by the outer end of the cylindrical member 30 to swing the levers into clamping engagement with the staves forming the tub or receptacle. When the piston is moved outwardly, the cams 31 will move the outer ends of the levers 36 outwardly, and when thus moved, the end of the cylindrical member 30 will force the outer ends of the levers into clamping engagement with the rece tacle placed on the holding member 24. U-s aped springs 42 are interposed between the levers 36 and 39 to yieldingly hold the clamping levers 39 in their unclamping positions. A pipe 43 extending into the cylinder 25 provides the pressure fluid for moving the piston.

The inner end portions of the holding members 24 are in the form of gear wheels 44 which are in mesh with inions 45 mounted on short shafts 46. aid shafts extend through and are journaled in the head plate 23, and at their inner ends have pulleys 47 mounted thereon which are engaged by a belt 48. A pulley 49 also engaged by the belt 48 is mounted on a shaft 50 which extends to the rear portion of the machine and is journaled on portions of the frame 19. A countershaft 51 journaled on the frame above the shaft 50 has a pulley and belted connection 52 therewith, and the shaft 51 is in turn driven from an electric motor 53 through the intermediary of belts 54 and 55 and a gear reduction device 56. The motor 53 is mounted on the frame 19 and the reduction device is mounted on the base portion 18, as more clearly shown in Figs. 2 and 3.

It will be noted that the pulley. 49 is spaced some distance from the head plate 23 and out of the path of travel of the pulleys 47, so that when the said pulleys 47 are adjacent said pulley 49 in successive order, they will disengage the belt 48 and cease being rotated thereby, as shown in Fig. 4. Said inoperative position of the adjacent pulley 47 corresponds to one of the four positions or stations to which the tubs are intermittently moved and at which different operations of the machine are performed. Referring to these stations, A is the first at which the banded staves or tubs in the making are placed on the holding member and the edges of the staves are clamped thereto; B is the second station at which the band is removed and the edge portions of the staves are chamfered; C is the third station at which the outer surface of the staves assembled as a tub are sanded; and D is the fourth station at which a hoop is permanently forced on the chamfered and sanded tub. From the fourth station, the tub is moved again to the A station to be unclamped and removed and replaced by another incomplete tub.

The inner end of the tubular shaft 21 has a star wheel 57 formed with four radial slots 58 for intermittently receiving the roller 59 of the driving member 60. The peripheral portions 61 of the star wheel between the slots are of concave form to receive the peripheral portion 62 of the driving member to maintain said star wheel in its intermittent position or station of rest. Said star wheel and driving member form in substance a Geneva movement. The driving member 60 is mounted on the rear end of a shaft lit] 6'3 journaled on the frame 19. The forward end of saidshaft 63 carries a gear wheel 64 which' is in mesh with and is driven by a pinion 65 mounted 011 one of the shafts of the reduction gear device 56 before mentioned, and thus intermittently rotating the head plate 23. which carries the holding members 24. c

A belt tightener 66 carried by the frame parts 19 engages the belt 48 to take up slack in said belt.

Air or other pressure fluid is supplied to the tubular shaft 21 through the supply pipe 67 which extends into a stuffing box 68 mounted on the rear end of said tubular shaft 21. The pipes 43 connected to the cylinders 25 are also connected to rock valves 69 mounted on the rear portion of the flange 22 of the tubular shaft 21, and other pipes 70 connected to said valves extend through the flange 22 and the plate 23 and are connected to a fitting 71 covering the front opening of the tubular shaft and are in communication with the bore of said shaft, as shown in Figs. 1 and 6. The rock valve 69 is also formed with a discharge opening 72 and ports 7 2 and 43' in communication with the discharge opening 72 and the bore of the pipe 43 respectively, which extend through the inner face 69 of the casing of the valve 69.

A segmental rock valve member 73 oscillatingly mounted on the inner face of the valve casing is adapted to close the exhaust or discharge opening 7 2', as shown in Fig. 5, during the stave holding operation and to connect the port 43 to tlfe exhaust port 72 during the removal and replacement of the pails on the holder. The valve member 73 is formed with a segmental recess 74: of;sutficient length to connect both ports 43' and 7 2 when the valve member is in its exhaust position. The casing of the valve is formed with stop shoulders 75 to limit the movement of the valve member 73 in both directions, and the same member 73 is provided with a projecting stem 76 having a bell crank arm 77 mounted fast on its outer end. A collar 7 8 journaled on the. tubular shaft21 is formed with two spaced apart projections 79 between which extends a stop pin 80 which is mounted on a portion of the frame 19 to limit the movement of said collar. A- controlling lever 81 pivotally connected at its upper end to the collar 78 also has a medial pin and slot connection 82 with the collar to limit lateral movement of the lever. The

- combination of thecollar and the lever permits universal movement of the lever. The collar is provided with a projecting pin 83 which is in the path of movement of the bell crank arms 77 to automatically turn said arms and the valve members 73 to exhaust position when the holding members are approaching the tub discharging and charging ver 81 is also provided with a projecting pin 84 which may, by manual manipulation of the lever 81, be moved into and out of the ath of movement of the bellcrank arms 7 to move the valve members'7 3 to open position to admit air to the cylinders and cause the clamping members to clamp the staves in position. While the lever 81 can be adjusted to automatically engage the valve arms, the lever can be manually moved to move the valve arms when said arms are in the charging or A position.

Cam drums 85 and 86 mounted on the shaft 63 have cam grooves 87 and 88 formed on the peripheral portions thereof which engage and reciprocate rollers carried by cam levers 89 and 90. The cam lever 89 is pivoted at its upper end to the frame and has a linked connection 89' with a reciprocal bar 91 which is slidably supported on the frame parts 19 and extends from the rear to the front portion of the machine adjacent the lower peripheral portion of the head plate 23. The forward end of the bar 91 is provided with a; downwardly and inwardly extending arm 92 having an inverted upturned conical roller 93 j ournaled on its inner end portion which is adapted to engage the temporary tub band and force it off the tub at station B while the tub is being rotated by the holder.

The cam lever -is pivoted at its lower end to the base 18 and its end has a link and yielding connection 94 with a reciprocal bar 95 slidably and adj ustably mounted on the upper portions of the frame 19, as clearly shown in Fig. 3. To permit vertical adjustment and the angle of the bar to be changed to correspond to the taper of the tubs worked on, the upper end portions of the frame 19 are formed with elongated slots 96. and the bearing blocks 97 are verticaly adj ustably connected to the frame parts by bolts 97 which extend through said slots 96. The forward end portion of the reciprocal bar 95 carries a downwardly extending roller 98 which is adapted to engage the edge of a permanent band or hoop 99 loosely placed on the tub and work said band towards the portion of the tub of larger diameter, while said tub and band 'are being rotated by the holder.

The hub of the gear wheel64 is provided with a cam 100 which is engaged by the roller journaled on the end of an arm 101 forming part of a tiltable support 102 mounted on a frame part-19. An electric motor 103 mounted on the tiltable support has a cutter 104 on its shaft which engages the edge of the pail to chamfer the outer edge, surface thereof, as indicated in Fig. 10. The cam is timed so that when the pail arrives at station E the cutter will be moved upwardly to engage the revolving pail as before mentioned, and will cu or bevel the edge portion thereof.

After the edges of the tubs have been chamfered, they are moved in successive order to station to be sanded by the sandin mechanism 105 which is carried by the standard 20;

before mentioned. A belt wheel 106 journaled on the lower portion of said standard carries a wide sanding or abrading belt 107 which extends upwardly and over a companion pulley 108 adj ustably mounted on the upper portion of the frame. Said pulley 108 is journaled in a frame 109 and the frame is vertically slidably mounted on the upper end portion of the frame and has a rod 110 threaded into its lower portion which extends downwardly therefrom and is provided with a hand wheel 111 to adjust the parts with relation to each other. The lower end of the rod 110 is engaged by one end of a lever 112 which is fulcrumed on the standard 20. The opposite end of the lever carries a counterbalancing weight 113 to yieldingly hold the belt 107 taut. A slotted plate 114 is interposed bctween the base 18 and the lower end of the standard 20 and is bolted to the base through the slots 114' to permit adjusting the standard and the sanding belt towards and away from the tub holding mechanism. Said slotted plate 114 is formed with an upper annular shouldered or dovetailed recess 115 for receiving the heads of bolts 116 which extend through the lower end portion of the standard to permit circular adjustment of the standard. An electric motor 117 mounted on the upper portion of the standard 20 has a belted connection 118 with the pulley 108 to drive'the same.

To move the sanding belt 107 into intimate contact with the tubs in successive order, a lever 118 is provided which is pivotally connected at its upper end to the standard 20. Said lever is provided with two spaced apart idler pulleys 119 which bear against the rear side of the belt and move the belt portion to a position to partly surround each tub in successive order. as shown by dotted lines in Fig. 12. to smooth the surface thereof. The pulley lever 118 is swung into operative position by an arm 120 which has a link connection 121 with a wrist pin 122 mounted on disk wheel 123. The disk wheel is mounted on a shaft 124 which is journaled on the frame 19. and at its inner end is provided with pinion 125 which is in mesh with and is driven by a gear 126 mounted on the tubular shaft 21. The pinion 125 is loosely journaled on the shaft 124 and the inner end of its hub is formed with a clutch recess 127 for receiving the spring pressed slidable locking pin 1.28 carried by the clutch collar 129 mounted fast on the shaft 124. The clutch collar is prorided with an annular groove 130 for receiving the beveled face clutch member 131 extending therein. The locking pin 128 is formed with a side recess which is in register with the annular groove 130 when the locking pin is out of the clutch recess, as shown in Fig. 13. When the clutch member 131 is pulled downwardly,,the coiled spring 132 will force the locking pin into the clutch recess and lock the two parts together, and the disk wheel 123 will be rotated thereby to draw the sanding belt into engagement with the adjacent tub. A counterbalanced lever 133 pivotally mounted on the standard 20 extends inwardly therefrom and its inner end portion is connected to the lower end portion of the clutch member 131 and holds said member normally in its upper position, in which the locking pin 128 is'discngaged from the clutch recess 127. An arm 134 connected to the lewcr 133 and moving therewith extends downwardly from the lever at an angle and carries a roller or rounded part 135 at its lower end which is in the path of movement of the tubs mounted on the holders. As thus positioned. the tubs in successive order will engage the arm 134, and swing it downwardly, and this movement will release the locking pin 128 of the clutch and actuate the connected mechanism to draw the sanding belt into intimate engagement with the preceding tub on the holder.

When the clutch member 131 is swung downwardly by engagement with the tub while the tub is moving from station B to C, the tub comes in contact with roller 135 thereby pulling clutch member 131 out of clutch notch, when disk is disengaged from clutch pinion 125. The coiled spring 132 will then force the locking pin into the clutch recess and lock the two parts together, and the disk wheel will rotate one-half cycle to draw the sanding belt into engagement with the adjacent tub. lVhen each successive holder has a tub placed thereon and the holders move in successive order from station B to C, said tubs will successively come in contact with roller 135, thereby pressing beveled clutch member 131 downwardly so that locking pin 128 passes by without being engaged by said clutch member 131 and thereby causing disk member 123 to make one complete cycle to draw sanding belt into engagement with tub. If there are no tubs on holder B, as this holder goes to station C, then there is no movement of roller 135 or clutch member 1331 thereby releasing locking pin 128 from clutch pinion 125 and disk wheel at one-half cycle of movement,or releasing sanding belt from engaging holders, and the parts will remain in said positions until a tub passes from station B 1 to C.

A bell crank lever 136 pivotally mounted on the frame 19 has a slotted link connection 137 with the wrist pin 122 to permit moving the sanding belt 107 manually out of engagement with. the tub or other receptacle. I

From the foregoing description, it will be seen that the chamfering and sanding machine is well adapted for the purpose described.

' What I claim as my invention is:

1. A stave'receptacle sanding and chamferin machine, comprising a'frame, a revoluble olding device journaled on the frame and having a plurality of means for holding staves assembled to form a receptacle, all but one of said holding means being independently rotated and all of said holding means being moved by the holding device a plurality of positions to permit operations on the receptacle, means at one of its lower pos1- tions for clamping a, receptacle, means at a second position for removlng a temporary holding hoop from the.recept'acle and for chamfering one edge portion of the receptacle, means at a third position controlled by one of the receptacles in another position for sanding the outer side portion 0 the receptacle at said third position, means at a fourth position for forcing a hoop on the receptacle, and means at the first mentioned position for stopping the rotation of one of said holdm means and for unclamping the receptacle from the holding means to permit its removal and the positioning of another receptacle on the holder. I

2. A stave receptacle sanding and chamfering machine, comprising a frame, a revoluble holding device journaled on the frame and having fluid pressure means for actuating members "for holding a number of receptacles formed of staves,'said holding members being spaced apart and all but one of said holding members being independently rotated and all of said holding members being moved by the holding device to a plurality of positions to permit simultaneous o erations on the receptacles, means Mom 0 said positions for controlling the fluid pressure means to cause one of the holding members to clamp the opposite end edges of a hooped receptacle placed thereon, means at a second position or removing the hoop from the receptacle and for chamfermg the outer edge portion of the rece taole, means at a third position controlled yone of the receptacles in another position for sanding the outer side portion of the receptacle at said third position while the receptacle is being rotated, means at a fourth position for forcing a permanent hoop on the receptacle, and meansat the first mentioned position in WhlGh one of the holding members is not rotated for con trolling the fluid pressure means to actuate the holding member to unclamp the receptacle and permit its removal andthe position ing of another receptacle on the holder.

3. A sanding and chamfering machine, comprising a frame, a revoluble holding device journaled on the frame and having flu1d pressure means for actuating members for olding a number of receptacles formed of staves, said holding members being spaced apart and all but one of said holding members bein'g independently rotated and all of end edges of a hooped receptacle place thereon, means at a second posltion or removing the hoop from the receptacle and for chamferin'g the outer edge portion of the receptacle, a sanding mechanism adjacent a third position of the holder, means controlled by one of the receptacles for moving said sandmg mechanism into engagement with the receptacle on the adjacent holder for sandin the outer surface of the receptacle while the receptacle is being rotated, means at a fourth position for forcing a hoop on the receptacle, and means at the'first mentioned position for controlling the fluid pressure means to actuate each holding member to unclamp the reg ceptacle and permit its removal and the positioning of another receptacle on the holder.

4. A stave receptacle sandin and chamfering machine, comprising a rame, an intermittently revoluble holding device journaled on the frame and having means for actuating receptacle holding members, said holding members being spaced apart and having pulleys on their inner ends, a belt engaging said pulleys during a portion of the rotation of the holding device, said holding members intermittently stopping at diflferent work stations and at one of which stations the pulley on the holding member reaching said station is disengaged from the belt, means at said last mentioned station for controlling the receptacle holding members actuating means to cause the adjacent holding member to clamp the opposite end edges of a hooped receptacle place'dthereon, means at the second station for removing the hoop from the receptacle and for chamfering the outer edge portion of the receptacle, means at a third station controlled by one of the receptacles at another station for sanding the outer surface of the receptacle at said third station, means at a fourth station for forcing a hoop on the receptacle, and means at the first mentioned station in which one of the holding members is not rotated for'controlling the means to actuate the holding member to unclamp the receptacle and permit its removal and the positioning of another receptacleon the holder.

5. A sanding and chamfering machine, comprising a frame, an intermittently revoluble holding device journaled on the frame and having fluid pressure means for actuating members for holding a number of receptacles, said holding members being spaced apart and having pulleys on their inner ends, a belt engaging said pulleys during a portion of the rotation of the holding device, said holding device intermittently stopping at different work stations and at one of which stations the pulley at said station is disengaged from the belt, means at said last mentioned station for controlling the fluid pressure means to cause the adjacent holding member to clamp the opposite end edges of a hooped receptacle placed thereon, means at the second station for removing the hoop from the receptacle, and for chamfering the outer edge portion of the receptacle, a sanding mechanism adjacent a third station, means controlled by the movement of the receptacle that follows for moving the sanding mechanism into engagement with the re ceptacle at the third station for sanding the outer surface of said receptacle, means at a fourth station for forcing ahoop on the receptacle, and means at the first mentioned station for controlling the fluid pressure means to actuate the holding member to unclamp the receptacle and permit its removal and the positioning of another receptacle on the holder.

6. A stavereceptacle sanding and chamfering machine, comprising a frame, a tubular shaft journaled on the frame, separate fluid pressure operated receptacle clamping members carried by the shaft and in communication with the bore of the shaft, means for intermittently rotating the shaft to turn the clamping members to different work stations for different kinds of operation and to a receptacle charging and discharging station, means for rotating the clamping members at the work stations, means actuated by a receptacle at one station for controlling the op eration of a work instrumentality at another work station, means for controlling the pressure fluid to each clampin member in successive order, and means or forcin hoops on the receptaclescarried by the c amping members when adjacent one of the work stations.

7 A stave receptacle sanding and chamfering machine, comprising a frame, a tubular shaft journaled on the frame, receptacle clamping mechanisms, separate cylinders carried by the shaft and in communication with the bore of the shaft, said cylinders having pistons which form part of each receptaole clamping mechanism, means for intermittently rotating the shaft to turn the clamping mechanisms to work stations and to a receptacle charging and discharging position, means for rotating the clamping mechanism at the work stations, means for controlling the pressure fluid to each cylinder in successive order to clamp the receptacles t0 the clamping mechanism, means for forcing temporary hoops off the receptacles when adjacent the second work station and for chamfering the outer edge portions of the receptacles, a sanding mechanism adjacent the third work station controlled by a receptacle at another work station, means for moving a portion of the sanding mechanism into engagement with the receptacles when adj acent the third work station, means for forcing hoops on the receptacles when adjacent the fourth work station, and means for controlling the pressure fiuid for each cylinder in successive order for unclamping the receptacles when adjacent the charging and discharging station.

8. A sanding and chamfering machine, comprising a frame, a tubular shaft journaled on said frame, endwise receptacle clamping mechanisms carried by the shaft and formed in part of cylinders which are in communication with the bore of the shaft, pistons within the cylinders for actuating the clamping mechanisms, means for intermittently rotating the shaft to turn the clamping mechanism to work stations and to a receptacle charging and discharging position, a belt and pulley means for rotatlng the clamping mechanisms at the different work stations, means for controlling the pressure fluid to the cylinders to clamp the receptacles to the clamping mechanisms, means for forcing temporary hoops off the receptacles when adjacent the second work station and for chamfering the outer edge portions of the receptacles, a vertically extending sanding belt adjacent the third work station, means for moving a portion of the sanding belt into engagement with the receptacles adjacent the third work station, cam means for forcing hoops on the receptacles when adjacent the fourth work station, and means for automatically controlling the pressure fluid to the cylinders for unclamping the receptacles when adjacent the charging and discharging station.

9. A sanding and chamfering machine, comprising a frame, a tubular shaft journaled on said frame, endwise receptacle clamping mechanisms carried by the shaft and formed in part of cylinders which are in communication with the bore of the shaft, pistons within the cylinders for actuating the clamping mechanisms, means for intermittently rotating the shaft to turn the clamping mechanism to work stations and to a receptacle charging and discharging position, a belt and pulley means for rotating the clamping mechanisms at the different work stations, means for controlling the pressure fluid to the cylinders to clamp the receptacles to the clamping mechanisms, cam means for forcing temporary hoops off the receptacles when adjacent the second work station and for chamfering the outer edge portions of the receptacles, a vertically extending sanding belt adjacent the third work station, means controlled by the movement of the receptacles for moving a portion of the sanding belt into engagement with and to partly surround the receptacle adjacent the third station, cam means for forcing hoops on the receptacles when adjacent the fourth station, and means for automatically controlling the pressure thereon, endwise receptacle clamping mechanisms carried by the shaft and formed in part of cylinders which are in communication with the bore of the shaft, pistons within the cylinders for actuating. the clamping mechanisms, means for intermittently rotating the shaft to turn the clamping mechanisms to work stations and to a receptacle charging and discharging position, pulleys having a geared connection with the clamping mechanisms, a belt connected to and driving the pulleys while the clamping mechanisms are at the different work stations, valves controlling the pressure fluid to the cylinders, means for controlling the opening of said valves, cam members journaled on the frame, a lever means actuated by one of the cam members for forcing hoops off the receptacles when adjacent the second work station,

a vertically extending sanding belt adjacent the third work station, means engaging the sanding belt and engaged by one of the receptacles for moving a portion of-the sanding belt into engagement with and to partly surround the receptacle adjacent the third station, a lever means actuated by the second cam member for forcing hoops on the receptacles adjacent the fourth work station, and means automatically controlling the closing of each valve when the receptacle engaged is adjacent the charging and'discharging station.

11. A sanding and chamfering machine, comprising a frame, a tubular shaft ournaled thereon, endwise receptacle clamping mechanisms carried by the shaft and formed in part of cylinders which are in communication with the bore of the shaft, pistons within the cylinders for actuating the clamping mechanisms, means for intermittently 'rotating the shaft to turn the clamping mechanisms to work stations and to a receptacle charging and discharging position, pulleys having a geared connection with the clamping mechanisms, a belt connected to and driving the pulleys while the clamping mechanisms are at the different work stations, valves controlling the pressure fluid to the cylinders, means for controlling the opening of said valves, cam members ournaled on the frame, a lever means actuated by one of the cam members for forcing hoops ofi the receptacles when adjacent the second work station,

a vertically extending sanding belt adjacent the third work station, a pair of spaced rollers engaging the inner side of the sanding belt adjacent the third work station, a clutch means for controlling the movement of the spaced rollers towards the receptacle adjacent the third work station, a lever moved 1) one of the receptacles for controlling the c utch, a lever means actuated by the second cam member for forcing hoops on the receptacles ad acent the fourth work station, and means automatically controlling the closing of each valve when the receptacleengaged is adjacent the charging and dischargin station.

12. 'A sanding and chamfering machine, comprising a frame, a tubular shaft journaled thereon and having a head plate, a plurality j of pneumatically operated receptacle holders carried by the head plate and connected to the bore of the shaft, means for supplying a pressure fluid to the bore of the shaft, valves interposed between the shaft bore and the receptacle holders, means for intermittently rotating the shaft to turn the holding members in successive order to different work statlons and to a charging and a discharging position, means for manually controlling the opening of the valves in successive order at the charging station to clamp receptacles on the holders, means for rotating the holders at some of the work stations,'means at a second station for removing hoops from the rece tacles and for moving a critter to charm er the outer edge portions of the receptacles, a vertically extending sanding belt, means for moving a portion of the belt into abrading engagement with the receptacle adjacent the third station, means at a fourth station for forcing hoops on the receptacles, and means for automatically closing the valves when the receptacles move from the fourth station.

In testimony whereof, I aflix my signature.

JOSEPH W. ROSCHE. 

